Diesel engines operate at higher compression ratios than gasoline engines, and fuel is injected under much higher pressure. An injection pump, usually driven by a belt or chain linked to the ...

Diesel fuel from the injection pump enters the mechanical injector body and starts to build pressure. Once the pressure is high enough (about 4,000 psi), a check valve in the injector is lifted ...

Starting in 2011, Ford and General Motors began using Bosch Mobility CP4 pumps to provide high pressure fuel to their diesel engines. GM used the pump on its 6.6-liter LGH and LML Duramax diesel ...

CP4 injection pumps are the weak links in some late-model diesel fuel systems. Here are insights on what happens when they break, and ways to prevent it from happening.

Jasper Engines & Transmissions is remanufacturing the Bosch VP44 diesel injection pump. The pump was found on 1998-2002 Cummins B Series engines used in Dodge Ram pickups, Freightliner medium-duty ...

Fuel is supplied to the high-pressure fuel rail by a high-pressure supply pump. Depending on rpm and engine load, the pressure in the rail can exceed 30,000 to 40,000 psi.

SAE Transactions, Vol. 108, Section 3: JOURNAL OF ENGINES (1999), pp. 232-242 (11 pages) The paper presents experimental and theoretical results obtained for a mechanical Diesel fuel injection system, ...

Affected Nissan diesel trucks are installed with the defective Bosch CP4 high-pressure fuel injection fuel pump and can fail suddenly and without warning at any time, causing a total fuel system ...

Starting in 2011, Ford and General Motors began using Bosch Mobility CP4 pumps to provide high pressure fuel to their diesel engines. GM used the pump on its 6.6-liter LGH and LML Duramax diesel ...